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  <a name="hcs_gaussdb_00045"></a><a name="hcs_gaussdb_00045"></a>
  <h1 class="topictitle1">恢复华为云Stack GaussDB实例</h1>
  <div>
   <p>当需要对已备份的华为云Stack GaussDB进行恢复时，可以参考本节恢复华为云Stack GaussDB至原位置或新位置。</p>
   <div class="section">
    <h4 class="sectiontitle">背景信息</h4>
    <p>支持使用备份副本、复制副本进行恢复。支持恢复至原位置（复制副本不支持恢复至原位置）或新位置。</p>
   </div>
   <div class="section">
    <h4 class="sectiontitle">前提条件</h4>
    <ul>
     <li>恢复前请确保恢复目标位置的数据目录剩余空间大于恢复副本缩减前大小，否则恢复将失败。</li>
    </ul>
   </div>
   <div class="section">
    <h4 class="sectiontitle">操作步骤</h4>
    <ol>
     <li id="hcs_gaussdb_00045__li0198134611381"><span>选择<span class="uicontrol" id="hcs_gaussdb_00045__hcs_gaussdb_00041_zh-cn_topic_0000001839142377_uicontrol1179134210549">“<span id="hcs_gaussdb_00045__hcs_gaussdb_00041_zh-cn_topic_0000001839142377_text1879110428547">数据利用</span> &gt; <span id="hcs_gaussdb_00045__hcs_gaussdb_00041_zh-cn_topic_0000001839142377_text13791144225411">副本数据</span> &gt; <span id="hcs_gaussdb_00045__hcs_gaussdb_00041_zh-cn_topic_0000001839142377_text88961121031">云平台</span> &gt; <span id="hcs_gaussdb_00045__hcs_gaussdb_00041_zh-cn_topic_0000001839142377_text13803615132619">华为云Stack GaussDB</span>”</span>。</span></li>
     <li><span>支持以资源维度或以副本维度查找副本，本节以资源维度为例进行说明。</span><p></p><p>在<span class="uicontrol">“<span>资源</span>”</span>页签，根据实例名称查找到需要恢复的实例，并单击实例名称。</p> <p></p></li>
     <li><span>在<span class="uicontrol">“<span>副本数据</span>”</span>页面，依次选择年、月、天找到副本。</span><p></p><p>当时间下方显示<span><img src="zh-cn_image_0000001792543384.png"></span>，即表示该月、该天存在副本。</p> <p></p></li>
     <li><span>找到要恢复的副本，单击其右侧的“<span>更多</span> &gt; <span>恢复</span>”。</span></li>
     <li><span>指定副本或时间点进行恢复。</span><p></p>
      <ol type="a">
       <li>指定某个副本或两个副本之间的任意时间点进行恢复。
        <ul>
         <li>指定某个副本进行恢复<p><span><img class="eddx" src="zh-cn_image_0000002079873789.png"></span></p></li>
         <li>指定时间点进行恢复<p><span><img class="eddx" src="zh-cn_image_0000002043674772.png"></span></p> <p>时间轴上蓝色覆盖区域均可进行时间点恢复，<span><img src="zh-cn_image_0000002079873797.png"></span>表示该时间点存在副本。没有备份日志的时间点无法进行时间点恢复。</p></li>
        </ul></li>
       <li>恢复至原位置或新位置。
        <div class="note">
         <img src="public_sys-resources/note_3.0-zh-cn.png"><span class="notetitle"> </span>
         <div class="notebody">
          <p>恢复至新实例时，填写参数建议与原实例保持一致。</p>
         </div>
        </div>
        <ul>
         <li>恢复至原位置<p>相关参数说明如<a href="#hcs_gaussdb_00045__table774016874418">表1</a>所示。</p>
          <div class="tablenoborder">
           <a name="hcs_gaussdb_00045__table774016874418"></a><a name="table774016874418"></a>
           <table cellpadding="4" cellspacing="0" summary="" id="hcs_gaussdb_00045__table774016874418" frame="border" border="1" rules="all">
            <caption>
             <b>表1 </b>恢复至原位置参数说明
            </caption>
            <colgroup>
             <col style="width:24.21%">
             <col style="width:75.79%">
            </colgroup>
            <thead align="left">
             <tr>
              <th align="left" class="cellrowborder" valign="top" width="24.21%" id="mcps1.3.4.2.5.2.1.2.2.1.2.2.3.1.1"><p>参数</p></th>
              <th align="left" class="cellrowborder" valign="top" width="75.79%" id="mcps1.3.4.2.5.2.1.2.2.1.2.2.3.1.2"><p>说明</p></th>
             </tr>
            </thead>
            <tbody>
             <tr>
              <td class="cellrowborder" valign="top" width="24.21%" headers="mcps1.3.4.2.5.2.1.2.2.1.2.2.3.1.1 "><p><span>位置</span></p></td>
              <td class="cellrowborder" valign="top" width="75.79%" headers="mcps1.3.4.2.5.2.1.2.2.1.2.2.3.1.2 "><p>实例所在的位置，用户无法修改。</p></td>
             </tr>
            </tbody>
           </table>
          </div></li>
         <li>恢复至新位置
          <ol class="substepthirdol">
           <li>填写<span class="uicontrol">“基本信息”</span>。
            <ol>
             <li>填写基本参数。参数说明如<a href="#hcs_gaussdb_00045__table1799312512502">表2</a>所示。 
              <div class="tablenoborder">
               <a name="hcs_gaussdb_00045__table1799312512502"></a><a name="table1799312512502"></a>
               <table cellpadding="4" cellspacing="0" summary="" id="hcs_gaussdb_00045__table1799312512502" frame="border" border="1" rules="all">
                <caption>
                 <b>表2 </b>基本信息参数说明
                </caption>
                <colgroup>
                 <col style="width:11.62%">
                 <col style="width:88.38000000000001%">
                </colgroup>
                <thead align="left">
                 <tr>
                  <th align="left" class="cellrowborder" valign="top" width="11.62%" id="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.1"><p>参数</p></th>
                  <th align="left" class="cellrowborder" valign="top" width="88.38000000000001%" id="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.2"><p>说明</p></th>
                 </tr>
                </thead>
                <tbody>
                 <tr>
                  <td class="cellrowborder" valign="top" width="11.62%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.1 "><p><span>所属项目</span></p></td>
                  <td class="cellrowborder" valign="top" width="88.38000000000001%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.2 "><p>填写恢复到新位置的实例归属的项目。</p></td>
                 </tr>
                 <tr>
                  <td class="cellrowborder" valign="top" width="11.62%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.1 "><p><span>实例名称</span></p></td>
                  <td class="cellrowborder" valign="top" width="88.38000000000001%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.2 "><p>填写恢复到新位置的实例名称。</p></td>
                 </tr>
                 <tr>
                  <td class="cellrowborder" valign="top" width="11.62%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.1 "><p><span>可用区ID</span></p></td>
                  <td class="cellrowborder" valign="top" width="88.38000000000001%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.2 "><p>可用区ID。可选部署在同一可用区或三个不同可用区，可用区之间用逗号隔开。</p>
                   <ul>
                    <li>部署在同一可用区：需要输入三个相同的可用区。<span style="color:#252B3A;">例如：部署在“cn-north-4a”可用区，则需要在此处输入"cn-north-4a,cn-north-4a,cn-north-4a"。</span>
                     <div class="note">
                      <span class="notetitle"> 说明： </span>
                      <div class="notebody">
                       <p>第二次和第三次输入是对第一次输入信息的确认。</p>
                      </div>
                     </div></li>
                    <li>部署在三个不同可用区：需要分别输入三个不同的可用区。</li>
                   </ul> <p>请向企业管理员获取。</p></td>
                 </tr>
                 <tr>
                  <td class="cellrowborder" valign="top" width="11.62%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.1 "><p><span>规格编码</span></p></td>
                  <td class="cellrowborder" valign="top" width="88.38000000000001%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.2 "><p>GaussDB的规格编码。可登录虚拟私有云服务的控制台界面，在原实例的<span class="uicontrol">“基本信息”</span>页面，在<span class="uicontrol">“数据库信息”</span>中的<span class="parmvalue">“性能规格”</span>的值里获取该编码。</p></td>
                 </tr>
                 <tr>
                  <td class="cellrowborder" valign="top" width="11.62%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.1 "><p><span>磁盘类型</span></p></td>
                  <td class="cellrowborder" valign="top" width="88.38000000000001%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.2 "><p>支持<span class="uicontrol" style="color:#282B33;">“LOCALSSD”</span>、<span class="uicontrol" style="color:#282B33;">“ULTRAHIGH”</span>两种磁盘类型。</p>
                   <div class="note">
                    <span class="notetitle"> 说明： </span>
                    <div class="notebody">
                     <p>请确认磁盘类型与原实例磁盘类型保持一致。</p>
                    </div>
                   </div></td>
                 </tr>
                 <tr>
                  <td class="cellrowborder" valign="top" width="11.62%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.1 "><p><span>磁盘容量</span></p></td>
                  <td class="cellrowborder" valign="top" width="88.38000000000001%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.1.2.2.3.1.2 "><p>将为恢复的实例分配的磁盘空间大小。需要大于或等于原实例。请根据用户的部署方案，设置磁盘容量的取值：</p>
                   <ul>
                    <li>MCS部署方案：取值范围：（分片数*40GB）~（分片数*16TB），且大小只能为分片数*40的整数倍。</li>
                    <li>BMS部署方案：该参数由所选择的规格自动计算，不可指定，即使填写，也不会生效。</li>
                   </ul></td>
                 </tr>
                </tbody>
               </table>
              </div></li>
             <li>（可选）单击高级配置，填写高级配置参数。参数说明如<a href="#hcs_gaussdb_00045__table280654545413">表3</a>所示。 
              <div class="tablenoborder">
               <a name="hcs_gaussdb_00045__table280654545413"></a><a name="table280654545413"></a>
               <table cellpadding="4" cellspacing="0" summary="" id="hcs_gaussdb_00045__table280654545413" frame="border" border="1" rules="all">
                <caption>
                 <b>表3 </b>基本信息高级配置参数说明
                </caption>
                <colgroup>
                 <col style="width:24.45%">
                 <col style="width:75.55%">
                </colgroup>
                <thead align="left">
                 <tr>
                  <th align="left" class="cellrowborder" valign="top" width="24.45%" id="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.2.2.2.3.1.1"><p>参数</p></th>
                  <th align="left" class="cellrowborder" valign="top" width="75.55%" id="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.2.2.2.3.1.2"><p>说明</p></th>
                 </tr>
                </thead>
                <tbody>
                 <tr>
                  <td class="cellrowborder" valign="top" width="24.45%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.2.2.2.3.1.1 "><p><span>主可用区ID</span></p></td>
                  <td class="cellrowborder" valign="top" width="75.55%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.2.2.2.3.1.2 "><p>取值为三个可用区ID之一。当原实例存在单独的仲裁可用区时必传，金融版（数据计算型）和其他情况不需要填写。</p></td>
                 </tr>
                 <tr>
                  <td class="cellrowborder" valign="top" width="24.45%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.2.2.2.3.1.1 "><p><span>仲裁可用区ID</span></p></td>
                  <td class="cellrowborder" valign="top" width="75.55%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.1.2.2.2.2.3.1.2 "><p>取值为三个可用区ID之一。当原实例存在单独的仲裁可用区时必传，其他情况不需要填写。</p></td>
                 </tr>
                </tbody>
               </table>
              </div></li>
            </ol></li>
           <li>单击<span class="uicontrol">“私有云信息”</span>，填写私有云信息。参数说明如<a href="#hcs_gaussdb_00045__table69702464566">表4</a>所示。 
            <div class="tablenoborder">
             <a name="hcs_gaussdb_00045__table69702464566"></a><a name="table69702464566"></a>
             <table cellpadding="4" cellspacing="0" summary="" id="hcs_gaussdb_00045__table69702464566" frame="border" border="1" rules="all">
              <caption>
               <b>表4 </b>私有云信息参数说明
              </caption>
              <colgroup>
               <col style="width:12.57%">
               <col style="width:87.42999999999999%">
              </colgroup>
              <thead align="left">
               <tr>
                <th align="left" class="cellrowborder" valign="top" width="12.57%" id="mcps1.3.4.2.5.2.1.2.2.2.1.2.3.2.3.1.1"><p>参数</p></th>
                <th align="left" class="cellrowborder" valign="top" width="87.42999999999999%" id="mcps1.3.4.2.5.2.1.2.2.2.1.2.3.2.3.1.2"><p>说明</p></th>
               </tr>
              </thead>
              <tbody>
               <tr>
                <td class="cellrowborder" valign="top" width="12.57%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.2.3.2.3.1.1 "><p><span>虚拟私有云ID</span></p></td>
                <td class="cellrowborder" valign="top" width="87.42999999999999%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.2.3.2.3.1.2 "><p>虚拟私有云ID。推荐使用方法1。</p>
                 <ul>
                  <li>方法1：登录虚拟私有云服务的控制台界面，在虚拟私有云的详情页面查找VPC ID。</li>
                  <li>方法2：通过虚拟私有云服务的API接口查询，具体操作可参考<a href="https://support.huaweicloud.com/api-vpc/vpc_api01_0003.html" target="_blank" rel="noopener noreferrer">查询VPC列表</a>。</li>
                 </ul></td>
               </tr>
               <tr>
                <td class="cellrowborder" valign="top" width="12.57%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.2.3.2.3.1.1 "><p><span>子网ID</span></p></td>
                <td class="cellrowborder" valign="top" width="87.42999999999999%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.2.3.2.3.1.2 "><p>子网的网络ID信息。推荐使用方法1。</p>
                 <ul>
                  <li>方法1：登录虚拟私有云服务的控制台界面，单击VPC下的子网，进入子网详情页面，查找网络ID。</li>
                  <li>方法2：通过虚拟私有云服务的API接口查询，具体操作可参考<a href="https://support.huaweicloud.com/api-vpc/vpc_subnet01_0003.html" target="_blank" rel="noopener noreferrer">查询子网列表</a>。</li>
                 </ul></td>
               </tr>
               <tr>
                <td class="cellrowborder" valign="top" width="12.57%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.2.3.2.3.1.1 "><p><span>安全组ID</span></p></td>
                <td class="cellrowborder" valign="top" width="87.42999999999999%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.2.3.2.3.1.2 "><p>指定实例所属的安全组。推荐使用方法1。如果不需要指定安全组，请联系客服申请白名单。</p>
                 <ul>
                  <li>方法1：登录虚拟私有云服务的控制台界面，在安全组的详情页面查找安全组ID。</li>
                  <li>方法2：通过虚拟私有云服务的API接口查询，具体操作可参考<a href="https://support.huaweicloud.com/api-vpc/vpc_sg01_0003.html" target="_blank" rel="noopener noreferrer">查询安全组列表</a>。</li>
                 </ul></td>
               </tr>
              </tbody>
             </table>
            </div></li>
           <li>单击<span class="uicontrol">“数据库信息”</span>，填写数据库信息。
            <ol>
             <li>填写基本参数。参数说明如<a href="#hcs_gaussdb_00045__table197418014586">表5</a>所示。 
              <div class="tablenoborder">
               <a name="hcs_gaussdb_00045__table197418014586"></a><a name="table197418014586"></a>
               <table cellpadding="4" cellspacing="0" summary="" id="hcs_gaussdb_00045__table197418014586" frame="border" border="1" rules="all">
                <caption>
                 <b>表5 </b>数据库信息参数说明
                </caption>
                <colgroup>
                 <col style="width:26.25%">
                 <col style="width:73.75%">
                </colgroup>
                <thead align="left">
                 <tr>
                  <th align="left" class="cellrowborder" valign="top" width="26.25%" id="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.1.2.2.3.1.1"><p>参数</p></th>
                  <th align="left" class="cellrowborder" valign="top" width="73.75%" id="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.1.2.2.3.1.2"><p>说明</p></th>
                 </tr>
                </thead>
                <tbody>
                 <tr>
                  <td class="cellrowborder" valign="top" width="26.25%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.1.2.2.3.1.1 "><p><span>数据库密码</span></p></td>
                  <td class="cellrowborder" valign="top" width="73.75%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.1.2.2.3.1.2 "><p>数据库密码。建议输入高强度密码，以提高安全性，防止出现密码被暴力破解等安全风险。</p></td>
                 </tr>
                 <tr>
                  <td class="cellrowborder" valign="top" width="26.25%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.1.2.2.3.1.1 "><p><span>端口</span></p></td>
                  <td class="cellrowborder" valign="top" width="73.75%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.1.2.2.3.1.2 "><p>GaussDB数据库端口当前只支持设置为8000，当不传该参数时，默认端口为8000。</p></td>
                 </tr>
                </tbody>
               </table>
              </div></li>
             <li>（可选）单击高级配置，填写高级配置参数。参数说明如<a href="#hcs_gaussdb_00045__table771193113596">表6</a>所示。 
              <div class="tablenoborder">
               <a name="hcs_gaussdb_00045__table771193113596"></a><a name="table771193113596"></a>
               <table cellpadding="4" cellspacing="0" summary="" id="hcs_gaussdb_00045__table771193113596" frame="border" border="1" rules="all">
                <caption>
                 <b>表6 </b>数据库信息高级配置参数说明
                </caption>
                <colgroup>
                 <col style="width:27.54%">
                 <col style="width:72.46000000000001%">
                </colgroup>
                <thead align="left">
                 <tr>
                  <th align="left" class="cellrowborder" valign="top" width="27.54%" id="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.2.2.2.3.1.1"><p>参数</p></th>
                  <th align="left" class="cellrowborder" valign="top" width="72.46000000000001%" id="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.2.2.2.3.1.2"><p>说明</p></th>
                 </tr>
                </thead>
                <tbody>
                 <tr>
                  <td class="cellrowborder" valign="top" width="27.54%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.2.2.2.3.1.1 "><p><span>参数组ID</span></p></td>
                  <td class="cellrowborder" valign="top" width="72.46000000000001%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.2.2.2.3.1.2 "><p>参数组ID。获取方法请参见<a href="https://support.huaweicloud.com/api-gaussdb/gaussdb_api_049.html" target="_blank" rel="noopener noreferrer">获取参数模板列表</a>。未填写该参数时，使用系统默认的参数模板。</p></td>
                 </tr>
                 <tr>
                  <td class="cellrowborder" valign="top" width="27.54%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.2.2.2.3.1.1 "><p><span>实例付费方式</span></p></td>
                  <td class="cellrowborder" valign="top" width="72.46000000000001%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.2.2.2.3.1.2 "><p>实例的付费方式。支持<span class="uicontrol">“<span>不指定</span>”</span>或<span class="uicontrol">“<span>按需付费</span>”</span>。</p></td>
                 </tr>
                 <tr>
                  <td class="cellrowborder" valign="top" width="27.54%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.2.2.2.3.1.1 "><p><span>实例自动备份策略</span></p></td>
                  <td class="cellrowborder" valign="top" width="72.46000000000001%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.2.2.2.3.1.2 "><p>设置<span style="color:#666666;">华为云Stack GaussDB</span>实例自动备份策略。当数据库的备份方式由XBSA备份转为自动备份时，该字段决定备份的频率。</p></td>
                 </tr>
                 <tr>
                  <td class="cellrowborder" valign="top" width="27.54%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.2.2.2.3.1.1 "><p><span>UTC时区</span></p></td>
                  <td class="cellrowborder" valign="top" width="72.46000000000001%" headers="mcps1.3.4.2.5.2.1.2.2.2.1.3.2.2.2.2.3.1.2 "><p>取值范围为UTC-11:00~UTC+12:00，且只支持整段时间，如UTC+08:00，不支持UTC+08:30。</p>
                   <div class="note">
                    <span class="notetitle"> 说明： </span>
                    <div class="notebody">
                     <p>不选择时，GaussDB默认为UTC时间。</p>
                    </div>
                   </div></td>
                 </tr>
                </tbody>
               </table>
              </div></li>
            </ol></li>
          </ol></li>
        </ul></li>
      </ol> <p></p></li>
     <li><span>单击<span class="uicontrol">“确定”</span>。</span></li>
    </ol>
   </div>
  </div>
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